3.2.1 The window options

To enable drag and drop of files from other applications (such as the Windows Explorer) to the LispWorks Editor tool, check the
Respond to drag and drop
option.

Checking
Reuse all tools
ensures that LispWorks uses an existing tool rather than starting up a new copy. For example, if an editor is already open, choosing
File > Open
and selecting a new file causes the file to be opened in the existing editor.